Pakistani "official of law enforcement agency" accuses the WSJ of spying?

Via W&P in the CPJ, here

".... But we are also concerned about the source for this scurrilous information, someone the reporter identified as “an official of law enforcement agency, who requested anonymity.” Could this be a deliberate government attempt to intimidate Rosenberg and other foreign correspondents working in Pakistan? That’s a deeply chilling possibility that must be investigated."